A cheap way to bluetooth your detector is to buy the Motorola headset HT820 with a bluetooth audio dongle if the dongle has a passkey 0000 it will work with the HT820 headphones and this is the good part if you pair it up with your phone ,if you get a phone call it will cut out your detector so you can take the phone call.
All from Ebay headphones HT820
All from Ebay headphones HT820